Input Modules
Models BAL2S,
BRG1R, LMM1S,
LMR1S, MAX1R,
MIC1S, MIC2S,
MIC1X, MIC2X,
SAX1R, TBL1S,
TEL1S, TNG1S
Bogen’s advanced plug-in modules provide a wide range of functions to support a variety of applications.
These modules support different signal-source requirements, including the ability to interface to balanced and
unbalanced high- and low-level inputs, stereo or mono, telco systems, and microphones.
BALANCED (BAL2S)
Stereo, balanced input module
• Stereo, high-impedance, balanced inputs
• Professional-quality, low noise performance
• Selectable gain of 0 or 18 dB
• Mutable by higher priority modules
• Variable ducking level when muted
• Fade back from mute
• Screw terminal connections
BRIDGING (BRG1R)
Daisy chain multiple amplifiers input module
• Gain/Trim control
• Input signal available at buffered output
• Mute send & receive
• Variable ducking level when muted
• Fade back from mute
• 4 Priority levels
• Buffered output not mutable
• Bus assignable
• RCA input and output connectors
LINE/MIC (LMM1S, LMR1S)
LINE/MIC level input modules
• Gain control
• Bass & Treble controls
• Actively-balanced input
• LINE/MIC Attenuator switch
• Gating w/Threshold & Duration
• 24V Phantom power supply
• 4 Priority levels
• Bus assignable
• Built-in limiter w/ LED (LMR1S)
• Remote control volume option (LMR1S)
• Single-gang remote control panel
included (LMR1S)
• Remote distance up to 2,000 Ft. (LMR1S)
• Screw terminal connectors
DESCRIPTION
FEATURES
©2005 Bogen Communications, Inc.
54-5093-01D 0707
Specifications subject to change without notice.
MICROPHONES (MIC1S, MIC1X)
Transformer-balanced, low-impedance microphone
input modules
• Gain/Trim control
• Bass & Treble controls
• Noise gate w/Threshold & Duration
• Limiter w/Threshold control
• Limiter activity LED
• 24V Phantom power
• Mute send & receive
• 4 Priority levels
• Bus assignable
• Balanced, transformer-isolated
• Screw terminal (MIC1S); XLR connector
(MIC1X) models
MICROPHONES (MIC2S, MIC2X)
Electronic-balanced, low-impedance microphone
input modules
• Gain/Trim control
• High Cut/Low Cut controls
• Voice Enhancement control
• Noise gate w/Threshold control
• Limiter w/Threshold control
• 24V Phantom power
• Mute send & receive
• 4 Priority levels
• Bus assignable
• Electronically balanced
• Screw terminal (MIC2S); XLR connector
(MIC2X) models
MONO, STEREO AUX
(MAX1R, SAX1R)
Unbalanced input modules
• Gain/Trim control
• Bass & Treble controls
• Gating w/Threshold & Duration
• Mute send & receive
• Variable ducking level when muted/gated
• Fade back from mute/gate
• 4 Priority levels
• Bus assignable
• Stereo to mono summing option (SAX1R)
• RCA connectors
TRANSFORMER-BALANCED (TBL1S)
Transformer-balanced AUX input module
• Transformer-isolated line-level input
• Gain/Trim control
• Bass & Treble controls
• Gating w/Threshold & Duration
• Mute send & receive
• Variable ducking level when muted/gated
• Fade back from mute/gate
• 4 Priority levels
• Bus assignable
• Pluggable screw terminal connections
TELEPHONE (TEL1S)
Telephone interface input module
• Loop start or ground start trunk interfacing
(requires external power supply)
• Dry loop interface to paging ports
• Audio-activated paging in dry loop
• Gain/Trim control
• Limiter
• Noise gate w/Threshold & Duration
• Mute send & receive
• 4 Priority levels
• Bus assignable
• Transformer-isolated
• Screw terminal connections
TONE GENERATOR (TNG1S)
Multiple tone generator input module
• Select 4 of 8 tones to trigger
• 512 Hz Burst/steady, slow whoop, siren,
mechanical bell, Klaxon, night ringer, double
chime, & doorbell tones
• Momentary & continuous playback modes
• Screw terminal trigger connections
• Level control
• Microprocessor-controlled operation
• Mute send & receive
• 4 Priority levels
TECHNICAL SPECIFICATIONS
Balanced Input Module (BAL2S)
Gain 0 dB (or +18 dB; switch
selectable per channel)
Frequency Response +0/-3 dB, 5 Hz-100 kHz
S/N (20 Hz - 20 kHz) -100 dBV
Distortion < 0.005%, 20 Hz-20 kHz
Input Impedance 10k ohms (unbalanced)
20k ohms (balanced)
Ducking (level) -10 dB to -48 dB
CMRR > 80 dB @ 1 kHz
Controls Ducking
Priority Lowest or none
Connector 6-position barrier strip
Dimensions 1-3/8" W x 3-1/8" H x 3-1/2" D
Weight 2.8 oz.
All measurements at 0 dB gain.
Bridging Input Module (BRG1R)
Gain -5 dB to 5 dB
Frequency Response +0/-3 dB, 5 Hz-100 kHz
S/N (20 Hz - 20 kHz) -100 dBV
Distortion < 0.005%, 20 Hz-20 kHz
Input Impedance 10k ohms (balanced)
Output Impedance 200 ohms (pseudo-balanced)
Ducking (level) -10 dB to -48 dB
Gate Threshold 3 mV to 30 mV
Gate Duration 0.5s to 5s
CMRR > 60 dB @ 1 kHz
Priority Four levels
Controls Gain, Ducking,
Gate Threshold,
Gate Duration
Connector RCA Type
Dimensions 1-3/8" W x 3-1/8" H x 3-1/2" D
Weight 2.3 oz.
0 dB
0 dB
+18 dB
+18 dB
2
INPUT
ATTEN.
+
_
GND
MIC/LINE
INPUT
MIC/LINE
LINE/MIC Input Module (LMM1S)
Gain 18 dB to 60 dB (MIC)
-2 dB to 40 dB (LINE)
Frequency Response 20 Hz to 50 kHz (+0/-3 dB)
S/N (20 Hz - 20 kHz) -76 dBV @ 60 dB gain
Distortion < 0.01%
Input Impedance 15K LINE mode
2K MIC mode
Gate Threshold 2 to 25mV @ min. gain
Gate Duration 0.5s to 5s
Priority Four levels
Tone ± 10 dB @ 100 Hz & 10 kHz
CMRR > 80 dB @ 1 kHz
Controls Gain, Bass, Treble,
Threshold, Duration
Connector Pluggable Euro Screw Type
Dimensions 1-3/8" W x 3-1/8" H x 3-1/2" D
Weight 2.2 oz.
Microphone Input Module (MIC1S)
Gain 28 dB to 62 dB
Frequency Response +0/-3 dB, 10 Hz-20 kHz
S/N (20 Hz - 20 kHz) -71 dBV @ 60 dB gain,
-131 dBV EIN
Distortion < 0.5%, 20 Hz-20 kHz
Input Impedance 500 ohms
Tone ±10 dB @ 100 Hz & 10 kHz
Limit (threshold) -10 dBV to off
Gate Threshold 3 mV to 30 mV
Gate Duration 0.5s to 5s
CMRR > 80 dB @ 1 kHz
Priority Four levels
Phantom Power 24V DC (defeatable)
Controls Gain, Bass, Treble, Limit,
Gate Threshold,
Gate Duration
Connector Screw Terminal
Dimensions 1-3/8" W x 3-1/8" H x 3-1/2" D
Weight 3.6 oz.
3
LINE/MIC Input Module (LMR1S)
Gain 18 dB to 60 dB (MIC)
-2 dB to 40 dB (LINE)
Frequency Response 20 Hz to 50 kHz (+0/-3 dB)
S/N (20 Hz - 20 kHz) -74 dBV @ 60 dB gain
Distortion < 0.03%
Input Impedance 15K LINE mode
2K MIC mode
Gate Threshold 2 to 25mV @ min. gain
Gate Duration 0.5s to 5s
Priority Four levels
Tone ± 10 dB @ 100 Hz & 10 kHz
CMRR > 80 dB @ 1 kHz
Controls Gain, Bass, Treble,
Limit, Threshold, Duration
Limit (threshold) -16 dBV to off
Remote Voltage 0 to 4.5V DC
Remote Loop Current 0.5mA
Max. Distance 200 Ft. (2 Conductor), 2,000 Ft. (3 Conductor Shielded)
Connector Fixed Euro Screw Type
Dimensions 1-3/8" W x 3-1/8" H x 3-1/2" D
Weight 2.6 oz.
CS+
W
GND
INPUT
ATTEN.
+
_
GND
MIC/LINE
INPUT
MIC/LINE
GAIN
BASS/TREBLE
GATING
GATE CONTROL
MUTE IN
MUTE OUT
GATE
ENABLE/
DISABLE
BUS
ASSIGNMENT
PRIORITY
LEVEL
BUS A
BUS B
MUTE LOW
MUTE MED
MUTE HIGH
INPUT
LIMITER
PHANTOM
POWER
PHANTOM
ON / OFF
Microphone Input Module (MIC1X)
Gain 28 dB to 62 dB
Frequency Response +0/-3 dB, 10 Hz-20 kHz
S/N (20 Hz - 20 kHz) -71 dBV @ 60 dB gain,
-131 dBV EIN
Distortion < 0.5%, 20 Hz-20 kHz
Input Impedance 500 ohms
Tone ±10 dB @ 100 Hz & 10 kHz
Limit (threshold) -10 dBV to off
Gate Threshold 3 mV to 30 mV
Gate Duration 0.5s to 5s
CMRR > 80 dB @ 1 kHz
Priority Four levels
Phantom Power 24V DC (defeatable)
Controls Gain, Bass, Treble, Limit,
Gate Threshold,
Gate Duration
Connector XLR
Dimensions 1-3/8" W x 3-1/8" H x 3-1/2" D
Weight 3.6 oz.
Remote
Control
Panel
included
Microphone Input Module (MIC2X)
Gain 18 dB to 62 dB
Frequency Response +0/-3 dB, 10 Hz - 40 kHz
S/N (20 Hz - 20 kHz) -73 dBV @ 60 dB gain,
-133 dBV EIN
Distortion < 0.02%, 20 Hz - 20 kHz
Input Impedance 2K ohms
Tone -10 dB @ 100 Hz & 3 kHz
(cut only)
Limit (threshold) -10 dBV to off
Gate Threshold 3 mV to 30 mV
CMRR > 80 dB @ 1 kHz
Priority Four levels
Phantom Power 24V DC (defeatable)
Controls Gain, Low Cut, High Cut,
Enhance, Limit, Gate Threshold
Connector XLR
Dimensions 1-3/8" W x 3-1/8" H x 3-1/2" D
Weight 2.2 oz.
4
Microphone Input Module (MIC2S)
Gain 18 dB to 62 dB
Frequency Response +0/-3 dB, 10 Hz-40 kHz
S/N (20 Hz - 20 kHz) -73 dBV @ 60 dB gain,
-133 dBV EIN
Distortion < 0.02%, 20 Hz-20 kHz
Input Impedance 2K ohms
Tone -10 dB @ 100 Hz & 3 kHz
(cut only)
Limit (threshold) -10 dBV to off
Gate Threshold 3 mV to 30 mV
CMRR > 80 dB @ 1 kHz
Priority Four levels
Phantom Power 24V DC (defeatable)
Controls Gain, Low Cut, High Cut,
Enhance, Limit, Gate Threshold
Connector Screw Terminal
Dimensions 1-3/8" W x 3-1/8" H x 3-1/2" D
Weight 2.2 oz.
Mono Aux Input Module (MAX1R)
Gain -20 dB to 6 dB
Frequency Response +0/-3 dB, 5 Hz-100 kHz
S/N (20 Hz - 20 kHz) -100 dBV
Distortion < 0.005%, 20 Hz-20 kHz
Input Impedance 50k ohms
Tone ±10 dB @ 100 Hz & 10 kHz
Ducking (level) -10 dB to -48 dB
Gate Threshold 3 mV to 30 mV
Gate Duration 0.5s to 5s
Priority Four levels
Controls Gain, Bass, Treble, Ducking,
Gate Threshold, Gate Duration
Connector RCA type
Dimensions 1-3/8" W x 3-1/8" H x 3-1/2" D
Weight 2.6 oz.
Stereo Aux Input Module (SAX1R)
Gain -20 dB to 6 dB
Frequency Response +0/-3 dB, 5 Hz - 100 kHz
S/N (20 Hz - 20 kHz) -100 dBV
Distortion < 0.005%, 20 Hz - 20 kHz
Input Impedance 50k ohms
Tone ±10 dB @ 100 Hz & 10 kHz
Ducking (level) -10 dB to -48 dB
Gate Threshold 3 mV to 30 mV
Gate Duration 0.5s to 5s
Priority Four levels
Controls Gain, Bass, Treble, Ducking,
Gate Threshold, Gate Duration
Connector RCA type
Dimensions 1-3/8" W x 3-1/8" H x 3-1/2" D
Weight 2.6 oz.
Transformer-Balanced Input Module (TBL1S)
Gain -11 dB to +19 dB
Frequency Response 10 - 40 kHz (+0/-3 dB)
S/N (20 Hz - 20 kHz) -75 dBV
Distortion < 0.3%, 20 Hz - 20 kHz @ 1V
Input Impedance 10k ohms/600 ohms
(jumper selectable)
Gate Threshold 5 mV to disable
Gate Duration 0.5s to 5s
Priority Four levels
Duck Level -10 dB to -72 dB
Tone +/- 10 dB @ 100 Hz & 10 kHz
CMRR > 80 dB @ 1 kHz
Controls Gain, Bass, Treble, Duck,
Gate Threshold, Gate Duration
Connector Pluggable Euro Screw Type
Dimensions 1-3/8" W x 3-1/8" H x 3-1/2" D
Weight 3.8 oz.
600/10K
GATE
ENABLE/
DISABLE
BUS
ASSIGNMENT
BUS A
BUS B
Telephone Input Module (TEL1S)
Gain 0 dB to 30 dB
Frequency Response +0/-3 dB, 20 Hz - 20 kHz
S/N (20 Hz - 20 kHz) -90 dBV @ 30 dB of gain,
-120 dBV EIN
Distortion < 0.1%, 20 Hz - 20 kHz
Input Impedance Dry loop 30k ohms,
Wet loop 1k ohms
Limit (threshold) -10 dBV to off
Gate Threshold 3 mV to 30 mV
Gate Duration 0.5s to 5s
Priority Four levels
External Power 48V DC (for talk battery)
CMRR > 80 dB @ 1 kHz
Controls Gain, Limit,
Gate Threshold,
Gate Duration
Connector 6-position barrier strip
Dimensions 1-3/8" W x 3-1/8" H x 3-1/2" D
Weight 2.8 oz.
5
ARCHITECT & ENGINEER SPECIFICATIONS
Balanced Input Module (BAL2S) The BAL2S input mod-
ule shall be a stereo, high-impedance, electronically-balanced
input module. It shall be mutable by higher priority modules
and shall feature an internal PCB jumper to enable or disable
muting from the priority bus system. It shall have a continu-
ously variable ducking control that will enable attenuation of
the input signal from a minimum of 10 dB to a maximum of 48
dB relative to the normal unmuted condition. The module shall
have a rapid mute when the mute function is activated and a
gradual fade back from mute when the mute control is deac-
tivated. Gain shall be switch selectable per channel and shall
be 0 dB or +18 dB.
Bridging Input Module (BRG1R) The BRG1R input mod-
ule shall have a mono-balanced input and a buffered pseudo-
balanced output that will enable the connection of several
amplifiers to each other in a daisy chain configuration without
creating ground loops between units. It shall have an RCA jack
for both the input and the output connections. The module
shall have a gain/trim control that will allow the gain to be
adjusted plus or minus 5 dB relative to 0 dB nominal gain. It
shall have the ability to mute lower priority modules and be
muted by higher priority modules. The module shall be able to
assume any of 4 priority levels. It shall have a continuously
variable ducking control that will enable attenuation of the
input signal from a minimum of 10 dB to a maximum of 48 dB
relative to the normal unmuted condition and a gradual fade
back from mute when the mute control is deactivated. The
buffered output shall not be mutable. The module shall have a
VOX/gating circuit to control muting of lower priority mod-
ules and an internal gating circuit with controls for threshold
and duration. The module’s output shall be assignable to either
or both of two mixing buses.
6
LINE/MIC Input Module (LMM1S) The LMM1S module
shall be a LINE/MIC level input module. Input shall be via
front-mounted screw terminals. It shall have an internal, 24V
DC phantom power supply that is enabled by a PCB jumper.
The module shall have a gain control that will allow gain to be
adjusted from 18 dB to 60 dB in MIC position, or from -2 dB
to 40 dB in LINE position. It shall have the ability to mute
lower priority modules and be muted by higher priority mod-
ules. The module shall be able to assume any of four priority
levels. The module shall have an internal gating circuit with
controls for threshold and duration. The module shall have
bass and treble controls with cut and boost of 10 dB at 100
Hz and 10 kHz, respectively. The module’s output shall be
assignable to either or both of two mixing buses.
LINE/MIC Remote Input Module (LMR1S) The LMR1S
module shall be a LINE/MIC level input module with remote
volume control capability. Input level control shall be by
remote potentiometer or by direct voltage input (0 – 4.5V
DC). Input shall be via front-mounted screw terminals. The
LMR1S shall have an internal, 24V DC phantom power supply
that is enabled by a PCB jumper. The module shall have a gain
control that will allow gain to be adjusted from 18 dB to 60
dB in MIC position, or from -2 dB to 40 dB in LINE position.
It shall have the ability to mute lower priority modules and be
muted by higher priority modules. The module shall be able to
assume any of four priority levels. The module shall have an
internal gating circuit with controls for threshold and dura-
tion. It shall have a built-in limiter to control the maximum
output level of the module. The module shall have an LED to
indicate limiter activity. The module shall have bass and treble
controls with cut and boost of 10 dB at 100 Hz and 10 kHz,
respectively. The module’s output shall be assignable to either
or both of two mixing buses.
A Remote Volume Control Panel is included with the module.
The panel shall be wall mountable and shall be able to control
input level from a distance of up to 200 feet using a 2-conduc-
tor cable, or up to 2,000 feet using a 3-conductor shielded
cable.
Tone Generator Input Module (TNG1S)
Max. Output Level 1.8V
Max. Contact Resist. 100 ohms
Tones 8 total, 4 selectable;
512 Hz Burst/steady,
slow whoop, siren, mechanical
bell, Klaxon, night ringer,
double chime, & doorbell
Priority Four levels
Controls Level
Connector 5-position barrier strip
Dimensions 1-3/8" W x 3-1/8" H x 3-1/2" D
Weight 2 oz.
ARCHITECT & ENGINEER SPECIFICATIONS (cont.)
7
Mono Aux Input Module (MAX1R) The MAX1R module
shall be a mono, high-impedance, unbalanced input module.
The module shall have an RCA jack as its input connector. The
module shall have a gain/trim control that will allow the gain
to be adjusted from -20 dB to +6 dB relative to 0 dB nominal
gain. It shall have the ability to mute lower priority modules
and be muted by higher priority modules. The module shall be
able to assume any of 4 priority levels. It shall have a continu-
ously variable ducking control that will enable attenuation of
the input signal from a minimum of 10 dB to a maximum of 48
dB relative to the normal unmuted condition and a gradual
fade back from mute when the mute or gate control is deac-
tivated. The module shall have a VOX/gating circuit to control
muting of lower priority modules and its internal gating circuit,
with controls for threshold and duration. The module shall
have bass and treble controls with cut or boost of 10 dB at
100 Hz and 10 kHz, respectively. The module’s output shall be
assignable to either or both of two mixing buses.
Microphone Input Module (MIC1S) The MIC1S module
shall have a transformer-isolated, balanced input with screw
terminal connector. It shall interface with low-impedance
dynamic microphones. It shall also interface with electret con-
denser microphones and shall have an internal 24V DC phan-
tom power supply to provide the bias supply that is enabled
by a PCB jumper. The module shall have a gain control that will
allow the gain to be adjusted from 28 dB to 62 dB. It shall have
the ability to mute lower priority modules and be muted by
higher priority modules. The module shall be able to assume
any of 4 priority levels. The module shall have a VOX/gating cir-
cuit to control muting of lower priority modules and its inter-
nal gating circuit with controls for threshold and duration. It
shall have a built-in limiter, with a threshold control, to limit
the maximum output level of the module. A front panel LED
will indicate limiter activity. The module shall have bass and
treble controls with cut or boost of 10 dB at 100 Hz and 10
kHz, respectively. The module’s output shall be assignable to
either or both of two mixing buses.
Microphone Input Module (MIC1X) The MIC1X module
shall have a transformer-isolated, balanced input with XLR
connector. It shall interface with low-impedance dynamic
microphones. It shall also interface with electret condenser
microphones and shall have an internal 24V DC phantom
power supply to provide the bias supply that is enabled by a
PCB jumper. The module shall have a gain control that will
allow the gain to be adjusted from 28 dB to 62 dB. It shall have
the ability to mute lower priority modules and be muted by
higher priority modules. The module shall be able to assume
any of 4 priority levels. The module shall have a VOX/gating cir-
cuit to control muting of lower priority modules and its inter-
nal gating circuit with controls for threshold and duration. It
shall have a built-in limiter, with a threshold control, to limit
the maximum output level of the module. A front panel LED
will indicate limiter activity. The module shall have bass and
treble controls with cut or boost of 10 dB at 100 Hz and 10
kHz, respectively. The module’s output shall be assignable to
either or both of two mixing buses.
Microphone Input Module (MIC2S) The MIC2S module
shall have an electronically-balanced input with screw terminal
connector. It shall interface with low-impedance dynamic
microphones. It shall also interface with electret condenser
microphones and shall have an internal 24V DC phantom
power supply to provide the bias supply that is enabled by a
PCB jumper. The module shall have a gain control that will
allow the gain to be adjusted from 18 dB to 62 dB. It shall have
the ability to mute lower priority modules and be muted by
higher priority modules. The module shall be able to assume
any of 4 priority levels. The module shall have a VOX/gating cir-
cuit to control muting of lower priority modules and its inter-
nal gating circuit with a threshold control. It shall have a built-
in limiter, with a threshold control, to limit the maximum out-
put level of the module. The module shall have bass and treble
controls with cut only of 10 dB at 100 Hz and 3 kHz, respec-
tively. The module shall have a voice enhancement control for
improving voice intelligibility. The module’s output shall be
assignable to either or both of two mixing buses.
Microphone Input Module (MIC2X) The MIC2X module
shall have an electronically-balanced input with XLR connec-
tor. It shall interface with low-impedance dynamic micro-
phones. It shall also interface with electret condenser micro-
phones and shall have an internal 24V DC phantom power
supply to provide the bias supply that is enabled by a PCB
jumper. The module shall have a gain control that will allow the
gain to be adjusted from 18 dB to 62 dB. It shall have the abil-
ity to mute lower priority modules and be muted by higher
priority modules. The module shall be able to assume any of 4
priority levels. The module shall have a VOX/gating circuit to
control muting of lower priority modules and its internal gat-
ing circuit with a threshold control. It shall have a built-in lim-
iter, with a threshold control, to limit the maximum output
level of the module. The module shall have bass and treble
controls with cut only of 10 dB at 100 Hz and 3 kHz, respec-
tively. The module shall have a voice enhancement control for
improving voice intelligibility. The module’s output shall be
assignable to either or both of two mixing buses.
Stereo AUX Input Module (SAX1R) The SAX1R module
shall be a stereo, high-impedance, unbalanced input module.
The module shall have two RCA jacks for its input connec-
tors. The module shall have a gain/trim control that will allow
the gain to be adjusted from -20 dB to +6 dB relative to 0 dB
nominal gain. It shall have the ability to mute lower priority
modules and be muted by higher priority modules. The mod-
ule shall be able to assume any of 4 priority levels. It shall have
a continuously variable ducking control that will enable atten-
uation of the input signal from a minimum of 10 dB to a max-
imum of 48 dB relative to the normal unmuted condition and
a gradual fade back from mute when the mute or gate control
is deactivated. The module shall have a VOX/gating circuit to
control muting of lower priority modules and its internal gat-
ing circuit, with controls for threshold and duration. The mod-
ule shall have bass and treble controls with cut or boost of 10
dB at 100 Hz and 10 kHz, respectively. The module’s outputs
shall be independently assignable to each of two mixing buses.
The module shall allow stereo sources to be summed and sent
mono to either or both of two mixing buses.
50 Spring Street, Ramsey, New Jersey 07446, U.S.A.
Tel: 201-934-8500 Fax 201-934-9832 www.bogen.com
ARCHITECT & ENGINEER SPECIFICATIONS (cont.)
Transformer-Balanced Input Module (TBL1S) The
TBL1S input module shall be a transformer-isolated, line-level,
balanced input module. The module shall have a pluggable 3-
pin screw terminal input barrier strip connector to make the
input connection. The module shall have a jumper selectable
input impedance of 600 ohms or 10k ohms. The module shall
have a gain/trim control that will allow the gain to be adjusted
from -11 dB to +19 dB. It shall have the ability to mute lower
priority modules and be muted by higher priority modules.
The module shall be able to assume any of 4 priority levels.
The module shall have a VOX/gating circuit to control muting
of lower priority modules and its internal gating circuit with
controls for threshold and duration. It shall have a continuous-
ly variable ducking control that will enable attenuation of the
input signal from a minimum of -10 dB to a maximum of -72
dB relative to the normal unmuted condition and a gradual
fade back from mute when the mute or gate control is deac-
tivated. The module’s output shall be assignable to either or
both of two mixing buses.
Telephone Input Module (TEL1S) The TEL1S module
shall have a transformer-isolated, balanced input and configu-
ration jumpers that will allow it to interface with both wet and
dry loop telephone systems. In the dry loop mode, this mod-
ule shall allow connections to page port systems. In the wet
mode of operation, it shall allow connections to both ground
start and loop start telephone systems. The module shall have
a 6-pin screw terminal input barrier strip connector to make
the input connection. The module shall provide for the con-
nection of an external talk-battery power supply of 48V DC.
The module shall have a gain control that will allow the gain
to be adjusted from 0 dB to 30 dB. It shall have the ability to
mute lower priority modules and be muted by higher priority
modules. The module shall be able to assume any of 4 priori-
ty levels. The module shall have a VOX/gating circuit to control
muting of lower priority modules and its internal gating circuit
with controls for threshold and duration. It shall have a built-
in limiter, with a threshold control, to limit the maximum out-
put level of the module. The module’s output shall be assigna-
ble to either or both of two mixing buses.
Tone Generator Input Module (TNG1S) The TNG1S
input module shall be a multiple tone generator input module.
The module shall have a 5-pin screw terminal input barrier
strip connector to make the trigger connections. The module
shall include 8 tones: 512 Hz burst/steady, slow whoop, siren,
mechanical bell, Klaxon, night ringer, double chime, and door-
bell tones. The module shall permit 4 of the 8 tones to be trig-
gered. Momentary and continuous playback modes shall be
available. The module shall have a level control. It shall have the
ability to mute lower priority modules and be muted by high-
er priority modules. The module shall be able to assume any
of 4 priority levels. The module shall have a gradual fade back
from mute when the mute control is deactivated. The mod-
ule’s output shall be assignable to either or both of two mix-
ing buses.
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